ENSC Exam 2 Questions With Complete Solutions
44. Primary productivity is the direct result of
a. photosynthesis.
b. respiration.
c. grazers feeding on plants.
d. net primary productivity. Correct Answers photosynthesis.
45. Use the following example:A species can withstand a narrow
range of temperature. Above 100°F there are no species present.
In the range from 97°F to 100°F and 90°F to 94°F there are a
few species present. Below 90°F there are no species
present.What would you label the range of temperature from
90°F to 94°F for this particular species?
a. Zone of intolerance
b. Zone of physiological stress
c. Tolerance limit range
d. Optimal range
e. Range of tolerance Correct Answers Zone of physiological
stress
46. Pronatalist pressures are influences that lead people to
a. Increase fecundity
b. Have more children
c. Have fewer children
d. Prevent infant mortality
e. Wait until later in life to have children Correct Answers
Have more children
,47. Women who ________ are LEAST likely to have many
children.
a. Cannot afford children
b. Live where many children die young
c. Are subordinate to their husbands
d. Are able to earn an income for themselves
e. All of these are correct Correct Answers Are able to earn an
income for themselves
48. The demographic transition refers to a country's change from
a. High birth and death rates to low birth and death rates
b. High to low birth rates and low to high death rates
c. Low to high birth rates and high to low death rates
d. A majority of young people to a majority of elderly people
e. A majority of elderly people to a majority of young people
Correct Answers High birth and death rates to low birth and
death rates
49. Conservation biologists refer to the number of individuals
needed for long-term survival as
a. the bottleneck.
b. the carrying capacity.
c. the minimum viable population size.
d. K selected. Correct Answers the minimum viable
population size.
, 50. Ninety percent of the world's population growth in the next
century is expected to occur in
a. Less-developed countries
b. China
c. Developed countries
d. Moderately developed nations
e. India Correct Answers Less-developed countries
51. ____________________ is the term used to describe two
species that look alike and are both danergous or unpalatable.
a. Mullerian mimicry
b. Batesian mimicry
c. Symbiosis
d. Commensalism Correct Answers Mullerian mimicry
52. Mangrove trees are found along ________________
shorelines.
a. Tropical freshwater
b. Tropical saltwater
c. Temperate freshwater
d. Temperate saltwater
e. Tropical and temperate saltwater Correct Answers b.
Tropical saltwater
53. Exponential growth in a population
a. refers to an increase by a constant amount, such as a net gain
of 100 individuals per year.
44. Primary productivity is the direct result of
a. photosynthesis.
b. respiration.
c. grazers feeding on plants.
d. net primary productivity. Correct Answers photosynthesis.
45. Use the following example:A species can withstand a narrow
range of temperature. Above 100°F there are no species present.
In the range from 97°F to 100°F and 90°F to 94°F there are a
few species present. Below 90°F there are no species
present.What would you label the range of temperature from
90°F to 94°F for this particular species?
a. Zone of intolerance
b. Zone of physiological stress
c. Tolerance limit range
d. Optimal range
e. Range of tolerance Correct Answers Zone of physiological
stress
46. Pronatalist pressures are influences that lead people to
a. Increase fecundity
b. Have more children
c. Have fewer children
d. Prevent infant mortality
e. Wait until later in life to have children Correct Answers
Have more children
,47. Women who ________ are LEAST likely to have many
children.
a. Cannot afford children
b. Live where many children die young
c. Are subordinate to their husbands
d. Are able to earn an income for themselves
e. All of these are correct Correct Answers Are able to earn an
income for themselves
48. The demographic transition refers to a country's change from
a. High birth and death rates to low birth and death rates
b. High to low birth rates and low to high death rates
c. Low to high birth rates and high to low death rates
d. A majority of young people to a majority of elderly people
e. A majority of elderly people to a majority of young people
Correct Answers High birth and death rates to low birth and
death rates
49. Conservation biologists refer to the number of individuals
needed for long-term survival as
a. the bottleneck.
b. the carrying capacity.
c. the minimum viable population size.
d. K selected. Correct Answers the minimum viable
population size.
, 50. Ninety percent of the world's population growth in the next
century is expected to occur in
a. Less-developed countries
b. China
c. Developed countries
d. Moderately developed nations
e. India Correct Answers Less-developed countries
51. ____________________ is the term used to describe two
species that look alike and are both danergous or unpalatable.
a. Mullerian mimicry
b. Batesian mimicry
c. Symbiosis
d. Commensalism Correct Answers Mullerian mimicry
52. Mangrove trees are found along ________________
shorelines.
a. Tropical freshwater
b. Tropical saltwater
c. Temperate freshwater
d. Temperate saltwater
e. Tropical and temperate saltwater Correct Answers b.
Tropical saltwater
53. Exponential growth in a population
a. refers to an increase by a constant amount, such as a net gain
of 100 individuals per year.
